1	Mosquito free biogas plant Portable biogas plant with integrated geomembrane gas collector. It is capable of preventing mosquito growth in the gap between the digester and the gas collector. Facilities are also available for regulating the high pressure generated inside the plant, and also for allowing the gas to reach the stove even with the high pressure.	2013
2	Pressure booster for small capacity biogas plants Method and devise for maintaining the required pressure at the gas utilization point with automatic high pressure control.	2012
3	Automatic Slurry temperature controlling system Method for maintaining the required temperature of the bio materials inside the digesters in cold climatic regions.	2011
4	Foldable pre fabricated Biogas plant The pre fabricated plants enable the installation of domestic bio energy plants within few hours, avoiding the need for a skilled mason.	2011
5	Anaerobic pre digester with flexible gas collector Method and devise for collecting biogas and treated solid materials from anaerobic pre digester.	2011
6	Hydraulic non return valve Method and devise for transferring biogas from different digesters to the centralized gas collector without high pressure formation, in the digesters and gas collector.	2010
7	Bio gas purifying system Method and devise for removing unwanted particles and gases from the bio gas produced through cost effective methods.	2010
8	Module type multistage biomethanation plant Method and devise for generation of maximum quantity of biogas from organic waste materials by the introduction of multi stage digestion process.	2009
9	Anaerobic pre digester Method and devise for preventing acidity and scum formation in anaerobic digesters and for easy recovery of treated solid fertilizer.	2009
10	Anaerobic septic tank Method and devise for generating bio gas from human excreta through anaerobic process using specially designed septic tank.	2009
11	Pre fabricated RCC domestic digesters The prefabricated digesters help to complete the installation of a domestic bio energy plant with in 4 hours. There is no need of a skilled mason.	2008
12	Slurry recycling system This helps the treatment plant to work as a zero discharge one. The use of fresh water can also be minimized. The efficiency of the digesters is also improved.	2008
13	Pre digesters for waste to energy projects Pre digesters prevent formation of scum inside the digester. Treated manure recovery is also made very easy through the adoption of this system.	2007
14	De humidifier for power generation projects The humidity in the bio gas produced can be eliminated with the help of this system through refrigeration method.	2007
15	Integrated waste management plant In this plant different technologies are applied in a single plant for effective disposal of all types of waste. The accumulation of non treated waste is completely avoided.	2006
16	Bio-Cinerator for dry bio solid waste disposal Bio-cinerator helps to dispose off slow degradable bio waste materials through incineration using bio gas as the operational fuel. The heat produced through this process is used for heating water.	2005
17	Pre fabricated fixed dome digesters Pre fabricated fixed dome digester plants help to minimize the installation time especially in water logged and slum areas. In this design the gas is collected and stored in separate gas collection devices.	2004
18	Pre conditioner for bio waste treatment plant Pre conditioner helps to reduce the size of feed material for better performance.	2003
19	Hydrogen sulphide (H2S) scrubber for Bio gas plant This invention helps to eliminate formation of hydrogen Sulphide from Biogas on a continuous basis.	2002
20	Biogas filling system With the help of this system, Bio gas can be filled in cylinders without much expense.	2000
21	Portable Bio waste treatment bio gas plant Portable plants enable the users to install the plants anywhere on the ground or in the roof top of the house without much effort.	2000
22	Cooking gas from domestic food waste Through a process developed, cooking gas could be generated from domestic food waste with out the regular use of cow dung or bacteria culture.	1998